INSECTS COLEOPTERA. 59 



DENDROCTONUS Er. 



D. valens, rufo-piceus, flavo-hirtus, capite rugose punctate, thorace latitudine breviore, 

 lateribus postice fere parallelis antice convergentibus, ad apicem sinuato, ad basin late bisinuato, 

 confertissime punctate, linea tenui dorsali pone medium sublaevi, antice vage transversim 

 impresso, subtubulato ; elytris cylindricis confertim granulato-punctatis, striis vagis, foveatim 

 punctatis. Long. 34. 



One specimen, San Francisco ; Mr. Child. Much larger and broader than trie next species, 

 and differs from the large species of the Atlantic States by the finer and denser punctuation of 

 the thorax. 



D. similis, rufo-piceus, flavo-hirtus, capite rugose punctato canaliculate, canali interrupto, 

 thorace latitudine breviore, a basi antrorsum sensim angustato, lateribus rotundatis, ad apicem 

 profundius sinuato, ad basin late bisinuato, confertissime punctato, antice vage transversim im 

 presso subtulato ; elytris cylindricis confertim granulato-punctatis, striis vagis foveatim punc 

 tatis. Long. 25. 



Oregon, abundant ; collected by Col. McCall and Dr. Cooper. 



BOSTRICHUS Fabr. 



B. pubipennis, cylindricus longiusculus, nigro-piceus, thorace latitudine sesqui longiore, ante 

 medium tuberculato et exasperate parce puberulo, pone medium parce punctulato, elytris subti- 

 lissime punctulatis dense flavo-puberulis et parce setulosis, postice oblique declivibus baud 

 armatis ; capite piano marginibus longe flavo-pilosis. Long. !. 



San Jose, California. 



CORTHYLUS Er. 



C. scutellaris, cylindricus, piceo-niger, nitidus, capite convexo scabro, thorace latitudine baud 

 sesqui longiore, ante medium sensim asperato ; elytris versus basin indeterminate rufo-piceis, 

 subtiliter subseriatim parce punctatis, postice declivibus, granulis tribus vel quatuor parvis 

 armatis ; pedibus antennisque run s, his clava obscuriore. Long. *13. 



One specimen, San Jose, California. Less elongate than .fasciatus. 



ERGATES Serv. 



E. spiculatus, elongatus piceus, capite profundissime canaliculate, tuberculo suboculari valde 

 acuto, elytris rugose punctatis. Long. 2 4 15 2 55. Tab. II, fig. 9. 



Mas antennis longioribus, extrorsum attenuatis, articulis 3 4 punctis elevatis exasperatis, 

 thorace latitudine duplo breviore subtiliter dense scabro, vage inaequali antice biiinpresso, late 

 ribus serratis, femoribus anticis subtus tranversim rugosis. Fig. 9a. 



Femina, antennis corpore duplo brevioribus, articulis punctatis, thorace antrorsum angustato, 

 lateribus inaequaliter longe spinosis, dense fortius scabro inaequali, antice utrinque subcalloso. 



Lee. Proc. Acad. Nat. Sc. 7, 218. 



Tricliocnemis spiculatus Lee. Journ. Acad. Nat. Sc. 2nd ser. 2, 110. 



Oregon and California. The genus Tricliocnemis was established by me upon the female of 

 this species, under the belief that the pubescence of the anterior feet differed from that of 

 Ergates. But on comparing with the European species, I find no sufficient reason why they 

 should not be placed together, and it therefore gives me pleasure to make the necessary correction. 



